This is my first 3Dfx game, which I wrote after I've found
3Dfx-programming libraries on the net. It also has a multiplayer mode.
It needs a 3dfx card or an emulator for the
glide library to run (sorry if you have none of these ;-) )
Another bad news: I lost the readme somewhere.
But I'll tell you here, how the controls work:

Player 1:
1,2,3,4,5,6 on the numeric keypad to move,
right arrow to shoot

Player 2:
q,w,e,a,s,d to move,
space to shoot

Additionally, use "i", "o", and "p" to
change the settings, which player moves
which tank. With those keys you can enable
multiplayer mode.